Here's a fun listing of the most popular songs in America for the golden year of 1956. You will note Elvis was KING this year, by far and away the biggest of the year!

The Biggest Hits of 1956
Memories are Made of ThisDean MartinJanuary
The Great PretenderThe PlattersFebruary
The Rock and Roll WaltzKay StarrFebruary
Lisbon AntiguaNelson RiddleFebruary
The Poor People of ParisLes Baxter's Orch.March
Heartbreak HotelElvis PresleyApril
Hot DiggityPerry ComoMay
Moonglow and Theme from "Picnic"Morris StoloffJune
The Wayward WindGogi GrantJune
I Almost Lost My MindPat BooneJuly
I Want You, I Need You, I Love YouElvis PresleyJuly
My PrayerThe PlattersAugust
Don't Be CruelElvis PresleyAugust
Hound DogElvis PresleyAugust, HOT!!
Love Me TenderElvis PresleyNovember!!
The Green DoorJim LoweNovember
Singing The BluesGuy MitchellDecember
This was the year for the King! All summer and fall, he was on top with Hound Dog, with the flip side, "Don't Be Cruel", the only single to ever have both sides go to Number One!